Setting Up A Network
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SETTING UP A NETWORK USING THE K.D.E. G.U.I.
SETTING UP A NETWORK IN LINUX
Diagram 1.1 Diagram 1.3 Click Start -> System Settings -> Network The Network Configuration, user interface opens up as shown above. Assuming that there as shown in diagram 1.1. has been no attempt made to setup a network earlier it will empty as shown above. Click New.
Diagram 1.2 The Loading Network Settings screen will appear as shown in diagram 1.2. After a few moments the actual user interface via which network settings can be done will open up as shown in diagram 1.3. Diagram 1.4 The Select Device Type screen opens up. Select Ethernet Connector and click as shown in diagram 1.4. This will instruct the wizard to scan the system for all the Ethernet cards and display a list as shown in diagram 1.5.
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CONFIGURING AND SETTING UP LINUX USING ITS K.D.E. G.U.I.
Diagram 1.7 The Configure Ether Device screen appears as Diagram 1.5 After a minute the Select Ethernet Device screen shown in diagram 1.7, click Apply. opens up as shown above. This has a list of all the Ethernet cards discovered during the scan This will instruct the wizard to write appropriate done by this wizard. In this case there are two entries in the ipconfig file. This is the file that Ethernet cards the 1st and 2nd. The 1st card Linux always reads to know the configuration represents eth0, the 2nd card represents eth1 bound to a specific Ethernet card, in this case and so on. Select the 1st and click Forward. eth0. The Configure Network Settings screen opens up.
Diagram 1.8 The Network configuration screen opens once again. Now, however eth0 is displayed as shown in diagram 1.8. Click on Edit to change the Nickname from eth0 to anything more descriptive. In the General tab that appears over write the Nickname eth0, with a name of your choice.
Diagram 1.6 The IP address is going to be entered manually, click the Statically set IP Addresses radio button. In Address enter an IP address, which will identify the computer on the network. In Subnet Mask enter a subnet mask value (or accept the default which displays immediately). If the computer logins in to the Internet then in the Default Gateway Address enter the IP of the We used DAX to differentiate between the DAX computer which is the gateway to the Internet on card and the OnBoard Ethernet card in our the Network (or delete any default value system. Please see diagram 1.9. displayed there and leave it blank.
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SETTING UP A NETWORK USING THE K.D.E. G.U.I.
Diagram 1.12 The Information screen appears informing that the changes made to the ipconfig were Diagram 1.9 successfully written. There is also a warning Rename eth0 to any appropriate name (we’ve indicating that the network services may used DAX) as shown above. Click OK, to return have to be restarted via the command prompt the Network Configuration screen once again. if required. Click Ok.
Diagram 1.13 Diagram 1.10 Notice that Status indicates Inactive. Hence, This returns to the network configuration to Activate click the Activate button on the screen as shown in diagram 1.13. Notice however, that Status now displays Active. tool bar as shown in diagram 1.10. Click New once again, remember there were two Ethernet cards detected during the scan done by the wizard, eth0 (i.e. the DAX card) and eth1 (i.e. the OnBoard Ethernet card). As seen in diagram 1.13 above. Diagram 1.11 The redhat-config-network screen appears as shown in diagram 1.11. Click Yes.
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CONFIGURING AND SETTING UP LINUX USING ITS K.D.E. G.U.I.
Diagram 1.14 Select Ethernet Connector as shown in diagram Diagram 1.16 1.14 to commence configuring the OnBoard Select the Statically set IP Address radio button Ethernet card. Click Forward. once again. Next enter the appropriate subnet mask.
Note Eth0 was loaded with a Default Gateway Address because this computer itself is the gateway to the Internet.
Explaining The Internet Gateway The broadband Internet connectivity providers provided the IP address and the Subnet mask values loaded into eth0. Hence eth0 is the actual, physical gateway to the Internet. eth1 is the Ethernet card via which other computers on the network will access the Linux computer and in turn the Internet to which the Linux computer is the gateway.
Diagram 1.15 The Select Ethernet Device screen is displayed as shown in diagram 1.15. Now select the 2nd Now eth1 is loaded with only an IP address Ethernet card displayed (eth1). Click Forward. and an appropriate subnet mask to allow other computers on the network to access the Linux This will open up the Configure Network computer. Settings screen as shown in diagram 1.16. Again it is assumed that the IP address of this This explains the need for two Ethernet cards card will be set manually. on the Linux computer. After entering the IP address and Subnet mask click Forward.
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SETTING UP A NETWORK USING THE K.D.E. G.U.I.
Diagram 1.17 The Create Ethernet Device screen appears as Diagram 1.19 shown in diagram 1.17. In the General tab we changed the Nickname to LaptopLink. You can choose any name you Click Apply. feel is appropriate. Then click OK. This returns to the Network Configuration Screen. Notice however, that the Nickname has changed to Laptoplink.
Diagram 1.18 Diagram 1.20 This returns to the Network Configurations The LaptopLink is shown as Inactive. screen as shown in diagram 1.18. Activate to active the card.
Click
Select the second entry in this screen (i.e. eth1) by clicking on it. Next, click Edit to change the Nickname of eth1. Give this any appropriate name of your choice to help uniquely distinguish it from eth0, which has been assigned DAX.
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CONFIGURING AND SETTING UP LINUX USING ITS K.D.E. G.U.I.
Diagram 1.21 The redhat-network-network screen appears as shown in diagram 1.21. Click Yes.
Diagram 1.24 Since the Linux computer is the gateway to the Internet. One more configuration value has to be passed to eth0, i.e. the DAX card. That is the DNS server’s IP address. To do this first click on the Hardware tab in the Network Conf. Screen as shown in diagram 1.24.Next select eth0. Here eth0 is shown, as Linux recognizes Ethernet cards by their ID numbers.
Diagram 1.22 The Information screen appears with the message that indicates that the changes made have been successfully written to the ipconfig file. Additionally there is a warning that network services may have to be restarted. Next click the DNS tab. Click OK.
Diagram 1.23 Diagram 1.25 This returns to the Network configurations The Hostname is normally localhost.localdomain screen as shown in diagram 1.23. Notice that By default. the LaptopLink is now Active. In the Primary DNS textbox enter the IP address provided by the Board band Internet service provider. Next click File -> Save.
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SETTING UP A NETWORK USING THE K.D.E. G.U.I.
Diagram 1.26 The redhat-config-network screen appears as shown in diagram 1.26. Click Yes.
Diagram 1.28 Open a Konsole shell using the Start menu. Diagram 1.27 The Information screen comes up with a message indicting that the changes were successfully written to the ipconfig file together with a warning that network services may have to be restarted via the command prompt.
At the System prompt displayed enter: # service network restart ↵ An appropriate output should be visible on the console screen indicating that all is well as shown in diagram 1.28.
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7
SETTING UP A NETWORK IN LINUX
Diagram 1.1 Diagram 1.3 Click Start -> System Settings -> Network The Network Configuration, user interface opens up as shown above. Assuming that there as shown in diagram 1.1. has been no attempt made to setup a network earlier it will empty as shown above. Click New.
Diagram 1.2 The Loading Network Settings screen will appear as shown in diagram 1.2. After a few moments the actual user interface via which network settings can be done will open up as shown in diagram 1.3. Diagram 1.4 The Select Device Type screen opens up. Select Ethernet Connector and click as shown in diagram 1.4. This will instruct the wizard to scan the system for all the Ethernet cards and display a list as shown in diagram 1.5.
Page
1
CONFIGURING AND SETTING UP LINUX USING ITS K.D.E. G.U.I.
Diagram 1.7 The Configure Ether Device screen appears as Diagram 1.5 After a minute the Select Ethernet Device screen shown in diagram 1.7, click Apply. opens up as shown above. This has a list of all the Ethernet cards discovered during the scan This will instruct the wizard to write appropriate done by this wizard. In this case there are two entries in the ipconfig file. This is the file that Ethernet cards the 1st and 2nd. The 1st card Linux always reads to know the configuration represents eth0, the 2nd card represents eth1 bound to a specific Ethernet card, in this case and so on. Select the 1st and click Forward. eth0. The Configure Network Settings screen opens up.
Diagram 1.8 The Network configuration screen opens once again. Now, however eth0 is displayed as shown in diagram 1.8. Click on Edit to change the Nickname from eth0 to anything more descriptive. In the General tab that appears over write the Nickname eth0, with a name of your choice.
Diagram 1.6 The IP address is going to be entered manually, click the Statically set IP Addresses radio button. In Address enter an IP address, which will identify the computer on the network. In Subnet Mask enter a subnet mask value (or accept the default which displays immediately). If the computer logins in to the Internet then in the Default Gateway Address enter the IP of the We used DAX to differentiate between the DAX computer which is the gateway to the Internet on card and the OnBoard Ethernet card in our the Network (or delete any default value system. Please see diagram 1.9. displayed there and leave it blank.
Page
2
SETTING UP A NETWORK USING THE K.D.E. G.U.I.
Diagram 1.12 The Information screen appears informing that the changes made to the ipconfig were Diagram 1.9 successfully written. There is also a warning Rename eth0 to any appropriate name (we’ve indicating that the network services may used DAX) as shown above. Click OK, to return have to be restarted via the command prompt the Network Configuration screen once again. if required. Click Ok.
Diagram 1.13 Diagram 1.10 Notice that Status indicates Inactive. Hence, This returns to the network configuration to Activate click the Activate button on the screen as shown in diagram 1.13. Notice however, that Status now displays Active. tool bar as shown in diagram 1.10. Click New once again, remember there were two Ethernet cards detected during the scan done by the wizard, eth0 (i.e. the DAX card) and eth1 (i.e. the OnBoard Ethernet card). As seen in diagram 1.13 above. Diagram 1.11 The redhat-config-network screen appears as shown in diagram 1.11. Click Yes.
Page
3
CONFIGURING AND SETTING UP LINUX USING ITS K.D.E. G.U.I.
Diagram 1.14 Select Ethernet Connector as shown in diagram Diagram 1.16 1.14 to commence configuring the OnBoard Select the Statically set IP Address radio button Ethernet card. Click Forward. once again. Next enter the appropriate subnet mask.
Note Eth0 was loaded with a Default Gateway Address because this computer itself is the gateway to the Internet.
Explaining The Internet Gateway The broadband Internet connectivity providers provided the IP address and the Subnet mask values loaded into eth0. Hence eth0 is the actual, physical gateway to the Internet. eth1 is the Ethernet card via which other computers on the network will access the Linux computer and in turn the Internet to which the Linux computer is the gateway.
Diagram 1.15 The Select Ethernet Device screen is displayed as shown in diagram 1.15. Now select the 2nd Now eth1 is loaded with only an IP address Ethernet card displayed (eth1). Click Forward. and an appropriate subnet mask to allow other computers on the network to access the Linux This will open up the Configure Network computer. Settings screen as shown in diagram 1.16. Again it is assumed that the IP address of this This explains the need for two Ethernet cards card will be set manually. on the Linux computer. After entering the IP address and Subnet mask click Forward.
Page
4
SETTING UP A NETWORK USING THE K.D.E. G.U.I.
Diagram 1.17 The Create Ethernet Device screen appears as Diagram 1.19 shown in diagram 1.17. In the General tab we changed the Nickname to LaptopLink. You can choose any name you Click Apply. feel is appropriate. Then click OK. This returns to the Network Configuration Screen. Notice however, that the Nickname has changed to Laptoplink.
Diagram 1.18 Diagram 1.20 This returns to the Network Configurations The LaptopLink is shown as Inactive. screen as shown in diagram 1.18. Activate to active the card.
Click
Select the second entry in this screen (i.e. eth1) by clicking on it. Next, click Edit to change the Nickname of eth1. Give this any appropriate name of your choice to help uniquely distinguish it from eth0, which has been assigned DAX.
Page
5
CONFIGURING AND SETTING UP LINUX USING ITS K.D.E. G.U.I.
Diagram 1.21 The redhat-network-network screen appears as shown in diagram 1.21. Click Yes.
Diagram 1.24 Since the Linux computer is the gateway to the Internet. One more configuration value has to be passed to eth0, i.e. the DAX card. That is the DNS server’s IP address. To do this first click on the Hardware tab in the Network Conf. Screen as shown in diagram 1.24.Next select eth0. Here eth0 is shown, as Linux recognizes Ethernet cards by their ID numbers.
Diagram 1.22 The Information screen appears with the message that indicates that the changes made have been successfully written to the ipconfig file. Additionally there is a warning that network services may have to be restarted. Next click the DNS tab. Click OK.
Diagram 1.23 Diagram 1.25 This returns to the Network configurations The Hostname is normally localhost.localdomain screen as shown in diagram 1.23. Notice that By default. the LaptopLink is now Active. In the Primary DNS textbox enter the IP address provided by the Board band Internet service provider. Next click File -> Save.
Page
6
SETTING UP A NETWORK USING THE K.D.E. G.U.I.
Diagram 1.26 The redhat-config-network screen appears as shown in diagram 1.26. Click Yes.
Diagram 1.28 Open a Konsole shell using the Start menu. Diagram 1.27 The Information screen comes up with a message indicting that the changes were successfully written to the ipconfig file together with a warning that network services may have to be restarted via the command prompt.
At the System prompt displayed enter: # service network restart ↵ An appropriate output should be visible on the console screen indicating that all is well as shown in diagram 1.28.
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7
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